What's in the Box

(8) Forged Flat-Top Pistons

(8) Pro-Stock I-Beam Rods

(1) Series 9000 Cast Crank

(1) Main Bearing Set

(1) Rod Bearing Set

(1) Piston Ring Set

Product Description

Scat Stroker Kit
This rotating assembly will take your mild mannered 302 to a heavier hitting 331 in your 1979-1995 Mustang. A Series 9000 cast steel crankshaft offers a 3.250" stroke & swings a set of bushed 5.4" long Pro-stock I-beam rods featuring ARP 8740 3/8" capscrews. For maximum power and reliability, Scat adds a set of rod and main bearings and tops it off with a set of Forged pistons & rings. These Scat Street Strip rotating assemblies are designed to be used with 28oz. balance Flywheel and Harmonic balancer.

Compression Ratio Calculator:
9.5:1 w/54cc
9.0:1 w/58cc
8.4:1 w/64cc

Note
This kit comes un-balanced and must be balance with your supplied balancer and flywheel/flex-plate.
Flat top pistons have valve reliefs made onto them.

Note
This kit comes un-balanced and must be balance with your supplied balancer and flywheel/flex-plate.

Community Q&A (11)

I'm wanting to rebuild a motor for my car and I want a 331 with the trick flow stage 2 kit so which of the 3 type of pistons ( flat, dished or domed) would be the one I need. I also plan on forced induction. Probably a Whipple or kenne bell.Asked by Kenny S.from kingwood | January 30, 2015 | Comment00

Best Answer:I would consider using dished that will lower your compression and allow you to run higher boost psiAnswered by josh h.from hewitt | January 31, 2015 | Comment00

I would consider using dished that will lower your compression and allow you to run higher boost psi

Best Answer:Theoretically it should fit fine but as with any engine build you must check tolerances and piston to valve clearance "PTV" on any combination. There are slight variances in every block and unless you know the entire history of the motor there could have been previous machine work done Decking the block for example" that will effect the entire combination.Answered by Scott G.from hewitt | September 26, 2014 | Comment00

How much power is this kit capable of holdingAsked by daniel r.from Breaux bridge | January 4, 2015 | Comment00

Best Answer:Scat does not rate their kits due to several different variables. Having said that, there are lots of folks on various forums running around 700hp with these kits. Answered by Karson S.from Hewitt | January 6, 2015 | Comment00

Best Answer:Scat Offers a 1 year limited warranty from purchase date on their products. This warranty covers manufacturer defects in their products but does not cover products that have been altered, improperly installed, or abused/misused. It is the Installers or engine builders responsibility to verify the fitment of Scat products meet their specific requirements. Answered by Scott G.from hewitt | January 13, 2015 | Comment00

Will this stroker kit work with the trick flow top end kit stage 2 or would one of the other top end kits work betterAsked by joey h.from franklin | January 19, 2015 | Comment00

Best Answer:Joey, Any of the stroker kits can work with the TFS stage 2 kit but all will need to be checked for piston to valve clearance depending on what size valves you have etc...I do not believe any will just be a straight bolt together assembly with a stage 2 cam and heads. The piston to valve clearance will have to be checked and possibly notch the pistons for valve clearance. Answered by Tommy E.from Hewitt | January 21, 2015 | Comment00

what is the best way to measure for piston to valve clearance? Will my cam card give me that information?Asked by shawn w.from elsmere | January 24, 2015 | Comment00

Best Answer:Unfortunately your cam card will not tell you piston to valve clearance. Basically you have to partially assemble the motor to check piston to valve clearance. the most common procedure is as follows: Once you have your rotating assembly installed, you will install your camshaft and degree it to the proper specs listed on your cam card. Once the cam is degree'd in correctly you will bring number one cylinder up to top dead center "TDC". Install some modelers clay, play dough etc on the piston where the valve reliefs would go and make sure it is flattened out evenly. You will also need a pair of Solid lifters "they also make check lifters or check springs for this as well" to install on the cylinder you are working on. Hydraulic lifter will not work because they will compress. Next you will put on the head without the head gasket and torque it down. install your push rods and rocker arm and tighten them down to spec. Next you will slowly "and i emphasize slowly rotate the motor over to see if the valves come into contact with the piston. If it comes into contact, you will need to change cams, notch your current pistons or get a new set to allow for proper clearance. if it does not com into contact, pull the head back off and you will see the indention of the valve in the putty., carefully cut the putty in half as to not distort any of the thickness and measure the distance from the base of the valve indention the the surface of the valve relief. now take that measurement and add the thickness of your compressed head gasket and that will give you the piston to valve clearance you have on your combination. Its a pretty time consuming task and we recommend having a machine shop or reputable engine builder to assemble and verify all clearances on any performance build.Answered by Scott G.from hewitt | January 26, 2015 | Comment00

if I get my stock heads ported and polished would it be okay to run them?Asked by devan g.from borden | January 26, 2015 | Comment00

Best Answer:Even with stock ported heads, they will be much too restrictive for this application. We recommend aftermarket heads to see the benefits of this rotating assembly. Answered by Karson S.from Hewitt | January 26, 2015 | Comment00

Have a couple questions.i have a 302 engine block with 93,000 miles.Was wondering if installing this kit will be wise with the amount of miles i have on it?If so will the trick flow top end kit work with this kit with out having to change anything else such as the oil pump,flywheel and balancer.thanksAsked by tomas r.from san antonio | March 10, 2015 | Comment00

Best Answer:So long as you have your block properly machined, you should have no issues stroking it. The TFS top end kit would work well. With any new build always run a new oil pump and the balancer/flywheel will need to be changed to match the balance of the stoker kit.Answered by Jonathan M.from Hewitt | March 12, 2015 | Comment00

About This Brand

Scat enterprises was founding in the early 1960's by Tom Lieb. Since then, Scat has researched and developed aftermarket performance engine parts for a variety of different cars. Ranging from pistons, connecting rods, crankshafts, stroker kits, forged rotating assemblies, and many more engine internal, Scat has set the bar high within the automotive industry. They pride themselves in the high quality products the supply and the excellent customer service they are known for. Shop LatemodelRestoration.com to get your stroker kits and rotating assemblies to get your Mustang putting down serious horsepower.

Testimonial: Best Customer Service EVER !!

Had a problem with an order/quality issue. I put up a review stating so, and was contacted by Mike Linley, who was soooo nice and sooo professional, I almost felt bad about my review !! I felt the review was necessary because of bad welds/paint. Mike explained that they had a particular issue with that supplier and they had changed suppliers because of it. I must have mistakenly got an old set. (upper/lower Control arms-Foxbody). Mike asked a few questions, and was Sending me an updated replacement set while we were on the phone.!!! This is what I wish all Vendors would do; no arguments, no blame, no B.S. !! This is why LateModel stands out as an upstanding company, and backs up their products with AWESOME Customer service. Very rare in this day and age, and because of this I will be a customer for life, and will spread the good word ! Great to know some honest and Classy companies still operate in the good ol' USA. Thanks LateModel, and Thanks Mike !!! I look forward to seeing the New LCA'S and will review them too...You guys did the right thing and should and I'm overly impressed!